Seismic data processing

a seismic data and processing technology, applied in the field of seismic data processing, can solve the problems of seismic data acquired using over/under configuration, problem in applying 2d filters to process data acquired from such over/under configuration,

Active Publication Date: 2008-01-10
WESTERNGECO LLC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, varying vertical separation between the upper streamers and the lower streamers and varying inline separation between the streamers during acquisition have caused problems in the processing of seismic data acquired using over / under configurations.
In addition, application of 2D filters to process data acquired from such over / under configurations have also been problematic.

Method used

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  • Seismic data processing
  • Seismic data processing
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Examples

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Embodiment Construction

[0019]FIG. 1 illustrates a schematic diagram of a marine seismic survey 100 in accordance with implementations of various technologies described herein. In one implementation, the marine seismic survey 100 may include a source array 1 configured for emitting seismic energy, and a first streamer 2 and a second streamer 2′ both suspended within a water column at different depths below the surface of the sea 6. The second streamer 2′ may be suspended below the first streamer 2. The second streamer 2′ may be deployed to be nominally vertically below the first streamer 2; however, the action of tides and currents may mean that the second streamer 2′ is not always exactly vertically below the first streamer 2. The streamers may be deployed such that the first streamer 2 is deployed at a nominal depth Z1 below the surface 6 of the sea and the second streamer 2′ is deployed at a nominal depth Z2 (where Z2>Z1) below the surface 6 of the water column. Again, the action of tides and currents a...

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Abstract

Implementations of various technologies for processing seismic data. In one implementation, the seismic data may be processed by creating a fictitious source-receiver line connecting a source with a receiver location of interest, projecting one or more receiver locations adjacent the receiver location of interest onto the fictitious source-receiver line and decomposing seismic data on the receiver locations disposed on the fictitious source-receiver line into up-going wavefields and down-going wavefields.

Description

[0001]The current non-provisional patent application claims the priority of co-pending provisional patent application, attorney docket number 14.0312-US-PRO, Ser. No. 60 / 806,766, filed on Jul. 7, 2006 by the same inventors, with the same title.BACKGROUND[0002]1. Field of the Invention[0003]Implementations of various technologies described herein generally relate to seismic data processing, and more particularly, processing seismic data using filters, such as 2D filters.[0004]2. Description of the Related Art[0005]The following descriptions and examples are not admitted to be prior art by virtue of their inclusion within this section.[0006]Seismic exploration is widely used to locate and / or survey subterranean geological formations for hydrocarbon deposits. Since many commercially valuable hydrocarbon deposits are located beneath bodies of water, various types of marine seismic surveys have been developed. In a typical marine seismic survey, seismic streamers are towed behind a surve...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G01V1/38
CPCG01V1/38G01V1/36G01V2210/1293G01V2210/1423G01V2210/57
Inventor ROBERTSSON, JOHAN OLOF ANDERSKRAGH, JULIAN EDWARDMANEN, DIRK-JAN VANCAPRIOLI, PHILIPPE
Owner WESTERNGECO LLC
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